Arcom Director DS2 Hardware Manual page 42

DS2/DS4 Hardware Manual
4-Wire Transmitter, Self-Powered
Some HART devices are separately powered and provide power on the HART loop without requiring an
external supply. A typical wiring arrangement is shown below.
2-Wire Valve Positioner
AIM104-HBI
CHx +
250 Ω
CHx -
AIM104-HBI
+24F
CHx +
250 Ω
CHx -
IOUTx
FGND
4-Wire Self Powered
HART Transmitter(s)
Up to 15 HART Devices in
Multidrop mode, or 1 Device in
Loop 24 V PSU
- +
Power +
Power -
HART Signal +
HART Signal -
Power +
Power -
HART Signal +
HART Signal -
Point-to-point mode
2-Wire HART
Valve Positioner
Signal +
Signal -
Page 42